Lock



S. SEGAL.

LOCK.

APPLICATION FILED AUG.7,1919.

' Patented Mar. 14, 1922.

2' SHEETS-SHEET l.

INVENTOR SAMUEL 556/41. BY

Kim Y M,

ATTORNEYS.

S. SEGAL.

LOCK.

APPLICATION FILED AUG-7,1919- 1,409;245.' Patented Mar. 14, 1922.

I 2 SHEETS-SHEET Z. 32 K 2 (3 1/2 32 3 25 INVE NTOR 9 SAMUEL SECfAL MAM ATTORNEY;

UNITED STATES PATENT OFFICE.

SAMUEL SEGAL, OF NEW YORK, N. Y., ASSIGNOR TO SEGAL METAL PRODUCTS COM- IPANY, INC., 0]? NEW YORK, N. Y., A CORPORATION OF DELAWARE.

. Loon.

Specification of Letters Patent. P t t d 14, 19.22,

Application filed August 7, 1919. Serial. No. 315,795.

vTo all whom it may concern:

Be' it known that I, SAMUEL SEGAL, a c1t1- zen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Locks, of which the following is a specification.

My present invention relates to looks and more particularly to locks of the swinging door type although in its application 'it is not limited thereto and it has for its object the production of an inexpensive, simple and eflicient look so designed as to make unauthorized entrance through a door extremely difficult if not impossible when the lock is in locked position.

A further object of the invention is the production of a lock having a plurality of locking elements each adapted to interlock with a keeper and which shall also contain means carriedby said keeper adapted to interlock with one of said locking elements and to be heldin interlocked position therewith by the other of said locking elements.

Still other and further objects of the invention will appear from the accompanying description, the invention consisting in the novel parts and combinations of parts here inafter more particularly described and then set forth in the claims.

In the accompanying drawings forminga part of this description:

Fig. 1 is a front elevation of my improved look as applied to the inner side of a door.

Fig. 2 is a horizontal section on the line 2 2 of Fig. 1.

Fig. S-is an enlarged front elevation of the lock and its keeper showingthe cover plate of the keeper removed.

Fig. 4 is a vertical cross-section on the line 44 of Fig. 3.

Fig. 5 is a View similar to Fig. 3 but show- I ing the locking bolt in locked position.

Fig. 6 is a View similar to that of the keeper shown in Fig. 5 but showing a modification of the parts therein.

- Fig. 7 is. a front elevation of'the lock casing with its cover removed and showing the locking mechanism therein in normal position. 2

Fig. 8 is a view similar to Fig. 7 but showing the locking bolt in locked osition.

Fig. 9 is a View similar to *igs. 7 and 8 but showing both the spring latch and locking bolt in unlocked position. a

Fig. 10 is a front elevation of the locking bolt.

' Fig. 11 is a vertical cross-section on the line 1l,,ll of Fig. 8.

, Fig. 12 is a vertical cross-section on the line 12-12 of Fig. 8. 7

Referring in detail to the several figures of the drawing:

1 indicatesa metallic casing containing the loclnng mechanism and which is provided with a cover 2 normally resting on a ledge 2 of the casing and on a post 2" to which it is 'removably secured by a screw orother suitable means. Said casing is fastened preferably. by suitable screws passing therethrough as shown, to the inner-side of a swinging door 3 and adjacent the edge of the door. --A 'keeper 4.- also comprising a casmg having a removable cover is fastened in .any desired manner to the door frame or anism being well known require'no further description. 9' indicates a hollow knob connecting with the casing on the inside of the door and 10 1s a stem connecting with the cylinder 7 (see Fig.- 2)". and extending through the cover 2 andadapted to actuate an arm A rotatably mountedin said cover (see Fig. 11). Said stem is adapted to be actuated to o erate the lock from without the door by a lieyinsert'ed in the face plate 6.

Mounted within the casing 1 is a spring latch the body 11 of which n0rmallyex tends through a suitable aperture in the side wallof the casing. Said body 11 is pro- 1 vided with an inclined end 12 and with a slot 13 as shown and has secured thereto an inwardly extending bar 14 provided with a transverse flange 15. Secured to the body 11 of the spring latch are the inwardly and longitudinally extending rods 16, 17 provided at their inner ends with stops 16, 17, said stop .16 extending upwardly and terminating in a shouldered end 18. 19 indicates a U-shaped piece having arms 20, said U-shaped piece engaging and fitting around a rectangular-shaped post 21 which 1 is mounted in the casing 1. The arms 20 of of the U-shaped piece and the body 11 of the spring latch ,and'normally, tending by their action to force the spring latch into extendedor locked position or that position shown in Figs. 7 and 8. 22 indicates a detent having a laterally projecting flange 22. Said detent is slidablymounted in, a groove or guideway 23 with which the body of the casing is provided and is operable from within the door by a button 24 the shank of which extends through a slot 24 in the wall of the casing and the end of which shank is fastened to said'detent. VVh'en the spring latch is in retracted or unlocked position (see Fig. 9) it may be conveniently held in that position against the act-ion of. the

springs 21' by sliding the detent downwardly in its groove or guideway 23 whereby a forward movement of the" latch will be prevented by engagement of the transverse flange 15 of the inwardly extending bar 14 with the laterally projecting flange 22 of the detent. Obviously, when the detent is released from this engagement by lifting the same upwardly, the latch is immediately thrown into forward or. locked position by the action of the springs 21'. I movement of the latch is limited by the hook or stop 24 with which the body of the latch ."is provided and which is adapted to engage the side wall of the casing adjacent the aperture through which the end of the latch extends (see Figs. 7 and 8). j

25 indicates my improved locking bolt; Said bolt is provided with a slot 26 receiving a pin 27 which is secured to the wall of the casing and on which the locking bolt is suspended or hung. Adjacent its forward end,

said bolt rests on a post 28 sothat a perfectly horizontal movement of the bolt is assured.

Said bolt is provided with a notch 29 and inclined sides 30 and 31 adjacent said notch as wellas with a pin 32 secured to the bolt. The outer end of said bolt which is adapted to extendthrough asuitable aperture in the side wall of the casing is provided with an inclined edge 33. v F j A tumbler awl pivotally mounted on the post 28 is in icated at 34 and the fiat side thereof engages the'flat side of the locking bolt 25. Said tumbler pawl is provided with a slot 35 receiving the pin 32 of the locking bolt and with. notches 36 and 37 forming a portion of said slot. It is also provided with a curved lower side or surface 38 adjacent its inner end, a notch 39 having an inclined inner side and a notch 40 adjacent the notch 39. A leaf spring 41 is fastened to the end The forward of the tumbler pawl as illustrated, the other end of said spring engaging the side wall of the casing. The action of said spring 41 tends to force the inner end of the tumbler pawl downwardly, or in other words, tends to at all times cause the pin 39 of the locking bolt to engage the upper side of the slot- 35 of the pawl.

42 indicates an actuator rigidly mounted on the shank of-the knob 9. Said actuator is provided witha hooked end 43 adapted to engage the lower side of the stop 16' as inarm A to engage the operating finger 44 of the actuator.

Referring to Figs. 3to 5 inclusive,'the casing of the keeper is provided with apertures in the side wall thereof preferably of the same size as, and in alignment with, the apertures in the side wall of the casing 1 which apertures are adapted to receive the ends of the locking bolt 25 and spring latch 11. Mounted on the side wall of the keeper casing 4 is a latch 46) comprising a plateprovided .with a slot 47 receiving the pins 48, which are fastened to the side wall of the casing. Said pins have headed ends to prevent displacement of the latch 46 from its mounted position and in an obvious manner.

49 indicatesv a spring one end of which; is

fastened to the latch 46 and the other end of which is-fastened to the casing, the action of said spring'tending to hold the latch in its extreme upper or retracted position with a portion of the latch normally covering the aperture adapted to receive the locking bolt and as indicated in Fig. 4. The edge of the casing 4 of the keeper adjacent the edge of the door is bevelled as indicated at 50.

The operation of the lockis as follows: Normally the lock is in the position shown in Fig. 7 with the end of the spring latch extending out of the casing 1 and the locking bolt 25in retracted position; If the door is closed, it automatically locks for the reason that theinclined end 12 of the spring latch strikes against the beveled edge 50 of the keeper and is forced inwardly momentarilythereby and against the action of the springs 21 until the door is completely closed, when-the spring latch is projected orj-thrown into the aperture in the casing of the keeper by the action ofthe springs to lock the door. To unlock the door, a key in the face plate 6, or the knob 9, is turned in a direction such asto operate the actuator 42 in a counter-clockwise direction (see Fig. 9) whereby the hooked end of said actuator engages the stop 16. and forces the latch in- .wardly against the act-ion of the springs, 21

in an obvious manner. The door may be retained in unlocked position with the spring latch retracted by means of the detent 22 as previously described. I

. When the door is closed and the spring latch has been automatically thrown or projected into locked position, as has just been described, additional security agalnst an unauthorized entrance through the door may be provided b means of the locking bolt 25, that is by sli ing or moving the same horizontally through the casing on the pin 27 -and post 28 until its end protrudes or exsimultaneously engaging the curved lower side or surface 38 of the tumbler pawl 34 thereby raising said tumbler pawl on its pivot against the action'of the spring 41- and releasing the pin 32 from engagement with the notch 36. Further movement of the actuator in the same direction causes the end of the operating finger 44 to engage the notch 29 of the locking bolt to move or force said locking bolt horizontally through the casing, the pin 32 thereof at the same time travelling or slidin through the slot 35 of the tumbler pawl. en the shoulder 45 of the operating finger reaches theinclined side of the notch 39 the tumbler fpawl moves downwardly by the action 0 spring 35 thereby forcing the shoulder 45 to engage the notch 39, the pin 32 to engage the notch 37 and the shouldered end 18 of the stop 16' to engage the notch 40. Thus when the spring latch and the locking bolt are in extended or locked position they are held in that positionand against any horizontal movement by engagement of the various parts just described,as isobvious, until they are released by turning or operating the actuator in a counter-clockwise direction by means of a. keyfrom without the door or by the knob 9 within the door. When the actuator is so turned or operated, the shoul der, 45 raises the tumbler pawl on its pivot thereby releasing pin 32 from engagement with notch 37 and the shouldered end 18 of the stop 16 from engagement with notch 40.. The end of the operating finger 44, by its engagement with notch 29, then forces the locking bolt inwardly and as it reaches its extreme inner position the end of the oper- ,ating finger slides down the inclined side 30 of notch 29 thus forcing the pin 32 to engage the notch 36 due to the action of spring 41.

Further movement of the actuator 42 in the cated in Fig. 9.

As is manifest from the foregoing description, by my improved mechanism I have in reality provided two locking elements which,

when they are both in locked or extended position are dead, that is they cannot be moved except by an authorized person byturning the knob 9 or by means of a key from without the door. In order to make the lock still more secure I have provided additional locking means (see Figs. 3 to 5 inclusive) When the locking bolt 25 is thrown forward into locking position, the spring latch of course already being in that position, the inclined edge 33 of said locking bolt engages the top of said latch 46 forcing the same downwardly into the slot 13 of the spring latch so that it interlocks therewith and it is held therein by the locking bolt when the same is in extreme extended or locked position. (See Fig. 5.) When the lockin bolt is withdrawn the latch 46 automatica ly is released from its engagement with the spring latch by the actlon of the spring 49.

In the modlfication shown in Fig. 6 the latch 51 is mounted in the keeper casing in the same manner as the latch 46 of the prein the nature of the latch 46. i

ferred form but no spring is provided therefor so that it normally rests on the top pin of the pins 48 by the action of gravity. The upperside of the end of the spring latch 52' is beveled as at 53. and the outer side of the slot 54 with which the spring latch is providedis inclined as at Thus when the spring latch .is thrown into extended or locked position the beveled edge 53 strikes the lower end of the latch 51 forcing'said latch upwardly, the end finally riding over said inclined-edge and sliding down the inclined Side 55 of the slot 54 and into said slot. When the lockingbolt is thrown into locked position it engages the top of the latch 51 and holds the same in interlocked position in slot 54. As is obvious, when the latch bolt 52 is withdrawn, the locking bolt first having been withdrawn. the latch 51 rides up the inclined side 55 and down the beveled edge 53 until it is clear adapted to enter the slot of said latch and to be engaged by said locking bolt.-

2. In a lock, a keeper, a latch having a slot therein and a locking bolt each adapted to interlock with said keeper and a slidable. plate mounted in said keeper adapted to 3. In alock, a keeper, a latch adapted to 1 interlock with said keeper and having a slot therein and a locking bolt having an 1n- -c1ined end adapted to interlock with said keeper independently of said latch and means within said keeper adapted to interlock with the slot of said latch and to be engaged by the inclined end of said locking bolt.

4. In a lock, a keeper, a latch adapted to interlock, with said keeper and a locking bolt adapted to interlock with said keeper independently of said latch and means carried by said keeper-adapted to interlock with said latch and to be held in interlocked engagement therewith by said locking bolt.

5.,In a lock, a keeper, a latch adapted to interlock with said keeper and a locking bolt adapted to interlock with said keeper independently of said latch and means carried by said keeper adapted to inteeleekwith said latch when said latch is in lbcked position and to be held in interlocked engagement therewith by said locking bolt.

6. In a look, a keeper,a latch adapted to interlock with said. keeper and a locking bolt adapted to interlock with said keeper independently of said latch and means within said keeper adapted to interlock with said latch-when said latch is in locked position and to be held in interlocked engagement therewith by said locking bolt.

7. In a lock, a keeper," a latch and "a locking bolt adapted to interlock with said keeper and means slidably mounted within said keeper and adapted to interlock with said latch when said latch is in locked position and to be held in interlocked engagement therewith by said locking bolt.

8. In a lock, a keeper, two independent locking elements adapted to extend within said keeper when they are in locked position and movable independently ot-each other and means within said keeper adapted to interlock with one of said locking elements when in locked position and to be held in interlocked engagement therewith by the other of said. locking elements.

9. In a lock, a keeper, a casing for the locking mechanism, a latch and a locking bolt mounted in said casing each independently' of the other and,adapted to interlock with said keeper, an actuator mounted in sald casing and adapted to throw said locking bolt into locked position within said keeper and to draw said latch and locking bolt into unlocked position, and means within said keeper adapted to interlock with said latch when said latch is in ,locked position and to'be held in interlocked engagement therewith by said locking bolt.

10. In a lock, a keeper, a casing for the locking mechanism, a latch and a locking bolt mounted in said casing and adapted to interlock with said keeper, an actuator pivotally mounted in said casing adapted to throw said locking bolt into locked position within said keeper and to draw said latch and locking bolt into unlocked position and means Within said keeper adapted to inter-.

lock with said latch when said latch is in locked position and to be held in interlocked engagement therewith by said locking bolt.

11. In a lock, a keeper. a casing for the locking mechanism, a latch mounted in said casing and adapted to automatically interlock with said keeper, a locking bolt mounted in said casing, a tiimbler pawl pivotally mounted in said casing for holding said locking bolt in unlocked or locked position. means adapted to throw said locking bolt into locked position within said keeper and to draw said latch and locking bolt into unlocked position and means within said keeper adapted to interlock with said latch when said latch is in locked position and to be held in interlocked engagement there with b said'locking bolt.

12. l n a lock, a keeper, a casing for the locking mechanism, a spring latch mounted in said casing and adapted to automatically interlock with said keeper, a locking bolt mounted in said casing, a spring pressed tumbler pawl pivotally mounted in said casing for holding said locking bolt in unlocked or locked position, an actuator pivot-ally mounted within the casing and adapted to throw said locking bolt into locked position within said keeper and to draw said latch and locking bolt into unlocked position within the casing and means within said keeper adapted to interlock with said latch when said latch is in locked position and to be held in interlocked engagement therewith by said locking bolt.

Signed at New York in the county of New York and State of New York. this 6th day of August, A. D. 1919.

s'aMUEL SEGAL.

Vitnesses:

F. G. TOWNSEND, IRENE LEFKOWITZ. 

